The character 经过 is formed by combining two meaningful components: 经, which originally depicted the vertical threads on a loom, conceptually representing a main pathway, constant principle, or longitude; and 过, which illustrates the idea of passing by or moving through a boundary or space (derived from the "movement" radical 辶 combined with 咼). Together, they create a compound whose core meaning emerges from this spatial metaphor: to pass through or undergo a main path or course, conveying the sense of a process, experience, or passage from start to finish.